Edge setting and burnishing machine



E. ADAMSON.

SHOCK ABSORBER.

APPLICATION FILED JULY 30. 1920.

1,392,902,; Patented Oct. 11, 1921.

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HTED STATES rare OTIS R. ANGELL, OF HAVEBHILL, lvI-ASSACHUSETTS, ASSIGNOR TO EAMEL SHOE MACHINERY COMPANY, A CORPORATION MASSACHUSETTS.

. EDGE' SETTING AND BURNISHING MACHINE.

Specification of Letters Patent... Patented 001;, 11, 1921,

Application fild Marcli 30, 1918 Serial No. 225,672.

Be it known thatI, (Mrs R. Anonnma citizen of the United States, residing at Haverhill, in the county of Essex and State of Massachusetts, have invented certainnew and useful Improvements inEdge Setting and Burnishing Machines, of which the ffollowing is a specificat on, reference being had therein to the accompanying drawings.

This invent-ion relates to edge settinga-nd.

burnishing machines of that type in which a vibratory tool-support ngrocker arm 1s employed, and more specifically to that. form of machine wherein a tool holder adapted to carry a pair of tools isrotatably mounted upon the rocker arm, rotationof said :tool holder serving to place said tools alternately in operative position for acting upon the shank and forepart respectively' of the shoe sole.

The present invention resides in the provision of means for mounting and vibrating said rocker arm wherebythe latter may be made more compart inform than in types of machines at present in commercial use,thereby greatly decreasing ob ect1onable vibration of surrounding parts, while at the same;

and

time lowering the cost of manufacture upkeep of the same.

The invention further consists in novel means for rotatably mounting the tool holder with respect to the rocker arm and for locking said tool holder in either of two operative positions. V

The invention further consists in the provision of means, conveniently located for manipulation by the operator, for unlocking said tool holder to'permit the same tobe turned. 3

A valuable feature ofthe invention resides innovel means for turning said tool 'holder to a new operative position, after the same is unlocked, such'meansbeing arranged to act subsequently to thejunlocking.

operation, without necessitating further, positive action on the part of the operator.

The invention further resides in the provision of a single manually. slidable element carried in the tool-supporting member whereby the operator, by a simple. pressure of his hand, may both unlock and cause r0: tation of the tool holder .to another operative position.

Other and further objects and advantages. of the invention together with improved def tails of construction and desirable combinations of parts will be hereinafter described at length and more particularly pointed out in the claims, reference being had to the accompanying drawings in which,

Figure 1 is a side elevation, partly in section, of so much of the upper portion of the frame of an edge setting machine of usual form as is necessary to show the application of the present invention thereto,

Fig. 2'is a view, from the right hand side of, Fig. 1 showing the tool-carrying and operating parts in elevation, the frame being omitted.

Fig. 3 is a vertical transverse section of the parts shown in Fig. 2,

Fig. 4; is a vertical section through the parts shown in Fig. 2 taken on the line M, Fig. 3,

Fig. 5 is a detail of the manually operable slide member, and

Fig. 6 is a bottom plan viewof a portion of the tool-supporting arm showing a detail of the locking mechanism.

Referring to the drawings, numeral 1 indicates the upper portion of a pedestal or frame member which may be of anyusual or well known construction such as is commonly employed in machines of this type. This frame member is provided at its upper portion with'alined bearing members 2-2, providing journal bearings for a driven shaft 3, (Fig. 3), said shaft having fixed thereto between the bearings 29/ a drive pulley 4:, which may be rotated from any suitable source of power. 'The bearings 2*2 are herein shown as provided at 55 with oil cups whereby the driven shaft may be properly lubricated.

. 6 indicates a bracket member serving to support,at its free extremity, a finger hook of usual construction, the upper portion of which is as indicated at7, the bracket (3 also providing for suitably holding the gas pipe 8 leading to a burner, not shown, for heating the tools. As herein illustrated, the bearing member 2 has formed in its outer end, and closely adjacent the journal opening of the shaft 3, a cylindrical cavity 9, in which is fixed, as by means of a set screw 11, a pintle pin 10, said pin being provided at its outer extremity with anenlarged head 12. 13 is a tool-supporting member or rocker arm, having an enlarged head portion 1 1, and a tail portion 15 of substantially cylincylinder movin in the fluid thereof and engaging the a 'jacent end of the respective piston.

52. A drive shaft in axially alined sections, disks secured to the adjacent ends of said sections, arcuate fluid holding cylinders carried by one of said disks and circumferentially spaced thereon in pairs, double end plunger-s carried by the other disk and projecting between the cylinders of the pairs, the ends of each plunger extending into the adjacent ends of the cylinders of each pair and slidable therein in spaced relation to the walls of the cylinders, said cylinders bein partially filled with fluid, and springs within the cylinders moving in the fluid and engaging the extremities of the plungers as described.

3. A drive shaft in axially alined sect-ions, disks secured to the adjacent ends of said sections in' spaced apart relation, arcuate fluid holding cylinders carried by one of said disks and circumferentially spaced in pairs, double end plungers outstanding from the other disk havin oppositely projecting end portions paralle ing'the disk and forming pistons within the inner ends of the cylinders of .said pairs of cylinders, spaced from the Walls of the cylinders, said cylinders being partially filled with fluid, and springs operating in the fluid within the cylinders and engaging the extremities of said pistons for the purpose described.

In testimony whereof I have afi ixed my signature.

ERNIE ADAMSON.

44 is a transverse opening formed in the rocker arm 13 adjacent the upper end of the bore 31, and serving to guide a slidabl'e member 45, said member being provided at its forward extremity, which projects be yond the face of the rocker arm 13, with a knob 46, said knob being engageable by the hand of the operator for a purpose which will be hereinafter described. Fixed upon the rear extremity of said member 45 is a washer 47 of a diameter sufficient to overlap the edges of the opening 44, said washer being held'in fixed position upon the slide 45 by means of a screw 48 or other suitable device, a collar 51 being interposed between the head of said screw and the washer.

Within the bearing member 2 and adj acent the opening 9 is an opening 49, such opening providing a-poclret for a compression spring 50, this spring hearing at one end against the bottom of said pocket and having its other end encircling the collar 51 and bearing against the washer 47. The spring tends to maintain the slide member 45 in extreme forward position, the washer 47 serving to prevent said member 45 from' being forced entirely out of the opening 44. In the slide member 45 is formed a narrow slot 52 adapted for engagement by the flattened portion 43 of the disengaging pin 42, the latter thus serving to prevent rotation of member 45 about its own axis. The upper wall of saidslot 52 constitutes a cam surface 53, said surface cam element 53, whereby after sufiicient" movement of the slide member 45, said disengaging pin will force the locking pin 38, then projecting into the opening 41, out of operative engagement with. the same, thereby permitting the tool holder 28 to be freely rotated about the pintle pin'32. In order to prevent projection of pin 42 into locking engagement with one of openings 37, the inclined portion of cam 53 has just sufiicient throw to move the lower extremity of said pin to a position flush with surface 3;), the straightportion of the cam serving to permit additional movement of the slide member 45 after the disengagement of the locking pin without further moving the diseiwaging pin 42.

As herein shown, the pintle pin 32 is provided upon its upper extremity with one element of a ratchet clutch, the cotiperating element of such clutch being shown at 56. indicates teeth carried by the respective elements, said teeth being formed with straight portions 55, and inclined portions 55,the first of which, upon rotation of one of said clutch elements in one direction, serve to positively drive the other of said clutch elements, while the second, upon rotation of the first element in the opposite direction act as cams to separate the clutch elements, thereby preventing any driving transmission between the same.

The clutch element 56 is herein shown as slidably guided for movement toward and from the clutch element 54 by the side walls of open'ng 3i and also by means of a guide pin 57 slidable within a suitable opening in the pintle pin said clutch element 56 having fixed thereto an elongated gear 58. 59 is a light compression spring bearing upon the bottom of the cavity 31 and serving to normally hold the clutch elements and 56 in operative engagement but pen mitting the same to be separated as above indicated. Upon the slide member 45, adjacent the gear 58, is formed a rack 66 meshing with said gear 58, sliding move ment of the member 45 thus serving to rotate the gear 58.

By reason of the above described construction it will be evident that upon move ment of rod 45 inwardly, the gear 58 will be rotated, as herein shown, in a left hand direction. Such movement of the gear 58 together with the clutch element 56 serves to cause the inclined portions 55 of the teeth 55 carried by part 56 to ride up on the corresponding inclined portions of the teeth of clutch element 54, thus serving to movethegcar 58 against the tension of the spring 59, causing the separation of the clutch ele ments. Rotation of gear 58, as above indicated, therefore fails to impart any rot, tion to the pintle pin 32 and tool holder 28. Upon release of the knob 46 by the hand of the operator the spring 50 in expanding will reciprocate the slide 45 in the opposite direction, thus turning the gear 58 in a right hand direction, the vertical elements 55 of the clutch teeth 55 now engaging each other, and serving to positively drive the pintle pin 32 and tool holder 28, to cause a rotation of the latter.

The operation of the machine may now be briefly stated as follows:

Upon rotation of the drive shaft 3 the crank arm 25 through the connecting rod and wrist pin 2'? acts to rapidly vibrate the rocker arm 13 about the pintle pin 10. The tool holder being in the position herein shown, and it being assumed that the tool shown at the right of Fig. 1 has been in use, and it being desired to reverse the tool holder whereby to present the other tool in operative position, the operator will press on the knob 46 thereby moving the slide member 45 against the tension of spring 50.

During the first portion of such movement, disengaging pin 42, acted on by cam 53, will move downwardly in its guide opening, pressing down upon the extremity of the locking pin 38 until the latter has been.

moved out of engagement with the opening ll of the rocker arm, thus releasing the tool holder for operation. During this movement of the slide member 45 and while the locking pin 38 was still in engagement with the opening in the rocker arm, the rack 60 has been rotating the gear 58, but as above pointed out, by reason of inclined faces of the clutch teeth 55, such rotation of the gear 58 serves merely to separate the normally engagin mitting a free turning movement of gear 58, and inward movement of the slide member -15, but without imparting any rotational movement to the tool holder 28. Upon release of the knob as by the operator the spring 50, which has been compressed during the above operation, will immediately expand, pushing the slide member 45 forwardly, the clutch element 56 now positively engaging the clutch element 54L to turn the latter through a half revolution. During the first portion of the movement of the slide member 45 the disen a in in 4:2 is

7 b b b held down in extreme position, but when said pin is permitted to use by engagement tation of the tool holder 28, a locking pin 7 is presented beneath the opening 41, said locking pin immediately snaps upward into said opening thereby locking the tool holder in its new position. As the rotation of the tool holder from one position to another is rapid, it has been found in practice that at times the locking pin will be carried past said opening, thus failing to properly lock the tool holder in desired position, and in order to avoid such action the surface of the rocker arm, in advance of the opening 41, has been provided with an inclined groove 61 leading into said opening l1,'said groove serving to permit aslightoutward movement of the locking pin just prior to engagement of the same with the opening e1, thereby insuring proper engagement of said pin therewith.

"While as above pointed out the. present structure has been shown as devised for the employment oftwo diametrically opposed clutch elements 54-, 56, thus per tools, it is clearly evident that by slight and obvious modifications 1n the structure a greater or lesser" number of tools might be employed if this were found desirable. Furthermore, while the machine as herein illustrated isprovided with a tool operating mechanism at one side, only, of the frame, it is to be understood to be within the scope of the present invention to apply a similar mechanism to the opposite side of the frame and to actuate it from the same drive shaft if desired.

Having now described the mechanism in its preferred form, together with details of construction and the modeof' operation of the same, what I claim and desire to secure by Letters Patent of the'United States is,

In an edge setting machine, in combination, a bearing member, a drive shaft iournaied therein,-a'crank uponsaid shaft,

a rocker arm pivoted upon said bearing member closely adjacent said crank and arranged to swing in a plane at right angles to saidshaft, a wrist pin fixed to said rocker arm and a connecting rod constructed to transmit motion from said crank to said wrist pin to thereby vibrate said rocker arm.

2. In an edge setting machine, in combination, a frame providing a bearing member, a driven shaftjournaled in said bearing member and projecting beyond the end of the same, a crank upon the projecting end of said shaft, a rocker arm, means for pivotally'supporting said arm to turn about an axis closely adjacent the axis of the shaft, a wrist pin carried by said rocker arm and a connecting rod for connecting said crank and wrist pin whereby'rotation of the shaft acts to vibrate said rocker arm about its pivot.

. 3. In an edge setting machine, in combination, a frame member, a tool-supporting rocker arm pivoted, to said member to vibrate with respect thereto, said rocker arm being providedwith an internal cavity, and means comprising a pivoted connecting rod located within said cavity forvibrating said arm. 7

l. A vibratory rocker arm for edge setting machines comprising a tool-supporting tail portion and an enlarged head portion. said head portion being provided with a journal opening, with an internal cavity communicating with said opening, and with a wrist pin in said cavity. 4 V

In an edge setting machine, in combination, a tool-supporting.rocker arm comprising a head or casing provided with a cavity therein, journal means constructed and arranged to permit vibrating movement of 1 said rocker arm, meansincluding a connecting rod located within said cavity for vibrating said rocker arm, and a tool-carrying member mounted upon sald rocker arm.

latter opening.

6. In an edge setting machine, in combination, a vibratory rocker arm, a tool llOlflOl' rotatably mounted upon-said rocker arm, a movable clutch element carried by one of said parts "and arranged to engage said other part to prevent relative rotational movement of said parts and clutch disengaging means carried by said latter part.

7. In an edge setting machine, a vibratory tool-supportingmember, a tool holder rotatably mounted therein and means for normally locking said parts against relative rotation comprising a spring pressed latch slidably carried by saidtool holder and arranged to engage a cooperating element upon the vibratory membe 8. In an edge setting machine, a supporting member a rotatable tool'holder mounted thereon, a locking pin in said tool holder arranged for engagement with said member to hold said parts against relative rotation, a disengaging element movable with respect to said member for rendering said pin inoperative, and manually operable means for actuating said element.

9. In an edge setting machine, in combination, a rocker arm, a tool holder journaled to turn thereon, the opposed surfaces of said arm and holder being provided with alined openings, a spring pressed pin slidable within one of said openings and arranged normally to project into engagement with said other opening whereby to lock said arm and holder against relative rotation, and manually operable means, independent of said pin, for disengaging the pin from said 10. In an edge setting machine, in combination, a tool-supporting member, a tool holder mounted for rotation thereon, the opposed surfaces of said parts being provided with alined openings, a spring pressed latch pin slidable in the opening, of said holder and arranged to be normally projected into looking engagement with the opening in said member, and an element slidable in said latter opening for disengaging said latch pin therefrom.

11. In an edge setting machine, in combination, a rocker arm, a tool holder rotatably mounted thereon, latch means for locking said parts against relative rotation and a manually operable cam element carried by said rocker arm for rendering said latch means inoperative. I

12. In an edge setting machine having a vibrating rocker arm and a tool holder r0- tatable thereon, in combination, means for looking said holder against rotation comprising a spring-pressed pin carriedthereby and arranged to engage an opening in said arm, a disengaging pin slidable in said opening, and a member slidably guided for movement insaid arm and provided with a cam elementfor actuating said disengaging pin, whereby operation of said member serves to unlock said holder to permit rotation thereof.

13. In an edge setting machine, in combination, a rocker arm having a journal opening therein, a tool holder provided with a Vpintle pin supported to turn in said opening, a plurality of spaced apart, springpressed locking pins in said holder arranged for successive engagement with an opening in said arm, and means carried by said arm for disengaging said pins from said opening.

14. In an edge setting machine, in combination, a rotatable tool holder, means for locking the same against rotation, and means for unlockingand rotating said tool holder, said means comprising a hand operated. element movable in a rectilinear path transverse of the axis of rotation of said holder. w

15. In an edge setting machine, in combination, a supporting member, a tool holder rotatably mounted thereon, means for locking said holder against rotation, and a single member engageable by the hand of the operator, and'movable in a rectilinear path for disengaging said locking means.

I 16. In an edge setting machine, in combination, a frame member, a rocker arm pivoted to vibrate thereon, a tool holder rotatably mounted upon said rocker arm, and a single, manually operable member slidable in a path transverse of the axis of rotation of said holder and constructed and arranged to cause rotational movement of the latter. 7

17. In an edge setting machine, in combination, a supporting member, a tool holder rotatably mounted thereon, means for locking said tool holder against rotation, means engageable with said holder for turning the same, and a single reciprocable element constructed and arranged to render inoperative said locking means when moved in one direction, and to actuate said turning means when moved in the opposite direction.

18. In an edge setting machine, in combination, a rotatably mounted tool holder, means for locking said tool holder against rotation, and means for unlocking and turning said holder comprising a slide member, a spring for moving said member in one direction, and a manually engageable element for moving said member in the opposite direction.

19. In an edge setting machine, in combination, a rotatably mounted tool holder, means for locking said tool holder against locking said tool holder to permit rotation thereof, and resilient means for rotating said holder.

20. In an edge setting machine, in combination, a rocker arm, a tool holder rotatably mounted thereon and provided with one element of a ratchet clutch, a cooperating clutch elementrelatively movable into and out of engagement with said first element, resilient means normally acting to retain said elements in driving engagement, and means for alternately rotating said second clutch element in opposite directions, said elements being constructed and arranged; to be disengaged upon rotation of saidfirst element infonefdirection.

21; In combination in'a machine of the class described, a, rocker arm having a ournal opening therein, a tool holder having eitherof a vluralit ofvoaerative ositions V l i i a means fo'r disengaging said locking vmeans, means for rotating said tool holder, a mem- 'berireelyshdable within said rocker arm,

a spring locatedwithin an opening in said frame and engaging one end of said member,:a knob uponthe opposite end of said member, and means carried by said member for actuating said lock disengaging and said turning means. p p

23. In an edge setting machine, a tool supporting member, a tool holder rotatably mounted with respect thereto, the opposed, adjacent surfaces of said parts being maintained in-constant contact, a spring-projected locking pin slidably guided in one of said parts and constructedand. arranged to engage an opening in the other of said parts to lock them against relative rotation means for disengaging said pin from said opening to perniit rotation of one of said parts with respect to the other, and means for relatively rotating said parts, the surface of that partprovided with the opening having formed therein an inclined 'gI'OOVG leading into said opening forinsuring reengagement oi the locking pin therewithv 242. In an edge setting machine, in combination, a, rocker arm, a tool holder'rotatably of said parts for locking said par-ts against relative. rotation, and means carriedby the other otsaid parts for renderingsaidlatch means inoperative. I 7

25. In an edge setting machine, in combination,,a rocker arm,a tool holder rotatably mounted thereon, latch means carried by said tool: holder for locking said parts againstrelative rotatiomand means carried by said rocker arm for rendering saidlatch means inoperative. ,j 26. In anedgesetting machine, a rocker arm, a tool holder rotatably'mounted there on, latch means carried by one ofsaidparts for locking said parts againstrelative rotation, and means carried by theother vof said part's'tor rendering said latch means in-' mounted thereon, latch means carriedby one operativeboth-xofsaid means being located I wholly withinlthe periphery of said parts whereby they are protected Ifromf injury.

27. In an edge setting machin'efa rocker arm, a tool "holder rotat'ably mounted thereon, latch means carried by one of said parts locking; said parts against relative rotation, releasing means carried by the other of said parts for rendering'saidlatch means inoperative bothjofsaid means being located wholly within the periphery of said parts whereby they areiprotectedfrom injury, and means extending without saidparts for actuatingsaiddatch-releasing means. I

In testimony whereof," I have signed myi amine to thisspecificationj j V 1 OTIS'R. 'ANGELL," 

